Recursive:
a(1)≈2
a(n)≈a(n-1)x3
explicit:
a(n)≈ 2(3)^n-1
30 1/6 you double the two numbers and add them together.
2. Definition of supplementary angles
I’m not too good with proofs but hopefully at least one answer helped lol sorry
The solution is actually pretty simple. All you have to do is plug the numbers in corresponding the letters like a with a b with b and calculate
7). 6(6)+(5)^2-(3)^2=52
And you do the same thing with 8) you get 180